English: [He] comforted him from his mourning — this teaches that it is the way of the Holy One, blessed be He, to comfort mourners.
On the daf / in context: The blessing that follows immediately after Avraham’s death is read as divine consolation of the mourner Yitzchak, modeling the mitzvah of nichum aveilim.
Type of Learning
Custom (aggadah — God comforts mourners)
What Is Learned
It is a divine attribute to comfort mourners; the blessing of Yitzchak after Avraham’s death is the Torah’s illustration of that attribute and the source for the mitzvah of nichum aveilim.